p51xx: add selinux policies

Change-Id: I106ce4ba51bf5d46dac6984ef2f2c6bb53a22ee8
p51xx: refine sepolicies

Change-Id: I5e321acb556fa13a8d90c0ea7460272b841037f5
p51xx: refine sepolicies

Change-Id: I76104fca535df81717c0a8b3878e59d86c602fb6
Merge branch 'cm-10.2' into martincz